A new study by American scientists has shown that just one session of strength training lasting about 40 minutes can significantly improve long-term memory and working memory in adults. The study was conducted by scientists from Purdue University in Indiana (USA), observing 121 participants aged 18 to 50.
The training group performed moderate strength exercises—bench presses, deadlifts, barbell curls, leg presses, and others—for 42 minutes, including a warm-up and two sets of 10 repetitions. The control group watched videos of others performing the same exercises.
After the session, participants had blood tests and electroencephalography (EEG) scans. The results showed that strength training positively affected executive function, improved processing speed and working memory, and altered neuroelectrical activity. Participants in the training group demonstrated better reaction time and working memory performance compared to the control group.
Scientists suggest that the effect may be due to an increase in blood lactate levels and blood pressure after exercise, which stimulates cognitive function. However, the duration of this effect is not yet known.
The study adds weight to previous work that has shown that regular physical activity reduces the risk of dementia, maintains cognitive function and even reduces biological age. The World Health Organization recommends that adults get at least 150 minutes a week of moderate-intensity exercise or 75 minutes of vigorous-intensity exercise, and include strength training for major muscle groups at least two days a week.
